11 Apparatus for lighting, heating, cooling, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes, namely, water desalination plants, indoor radiant heating systems, electric radiant heaters for household purposes, solar collectors, solar collectors for heating, solar energy based cooling apparatus, wind energy based cooling apparatus, energy storage plants, water supply utensils for water purifying installations and bath installations, namely, faucets, water faucet spouts; water purification installations, namely, sewage drainage systems, waste water handling systems, infiltration and retention systems for rain water, and building drainage systems; sewage treatment plants, sewage disposal plants; sewage purification plants; sewage purification and installation and sewage purification apparatuses